Lub tshuab cua txias, lub tshuab dej txias, lub tshuab dej txias thiab cov kav dej defrosting, flanges, valves, kua twj thiab thawv, thiab lwm yam, nyob rau hauv qhov hloov pauv tas li ntawm lub siab thiab kub rau lub sijhawm ntev, los ntawm cov tub yees, tub yees, dej, cua thiab lwm yam corrosive, nws cov qauv thiab cov ntaub ntawv yuav tshwm sim rau ntau qib ntawm thinning lossis deformation, mus rau qhov uas qhov txwv ntawm qhov ntau ntawm qhov xwm txheej yuav tshwm sim.
1. Kho qhov kev hloov pauv hauv zos ntawm cov kav dej
Yuav kom tshem tawm qhov teeb meem deformation hauv zos, nws yog ib qho tsim nyog los nrhiav qhov laj thawj los ntawm cov qauv thiab kev ua haujlwm. Xws li cov kav dej tso pa tawm ntawm phab ntsa txias los ntawm kev sib sau ua ke ntawm cov khoom khov uas tshwm sim los ntawm kev deformation ntau dhau, yuav tsum ua kom muaj zog rau kev ua haujlwm defrosting. Yog tias cov kav dej ntev dhau, qhov deformation tshwm sim los ntawm qhov sib nrug ntawm lub bracket lossis hanger, lub bracket lossis hanger yuav tsum tau nce. Yog tias qhov deformation tsis loj, tsis cuam tshuam rau kev siv txuas ntxiv, tuaj yeem tos kom kho dua tshiab thiab tom qab ntawd kho, tab sis yuav tsum ua kom muaj zog rau kev tshuaj xyuas thiab kev saib xyuas. Yog tias lub raj mis khoov hnyav, qhov khoov ntawm lub raj mis tuaj yeem txiav tom qab cov tub yees hauv lub raj mis raug nchuav tawm thiab muab tso rau ntawm lub cuab yeej kho kom ncaj nws. Kev nias yuav tsum yog qhov sib npaug thiab qeeb, tsis txhob ntaus nrog lub rauj loj, thiab cov kav dej ncaj tom qab ntawd txuas nrog cov kav dej tso pa tawm.
2. Kho cov yeeb nkab tawg thiab cov qhov me me
Rau cov kab nrib pleb thiab qhov me me hauv cov khoom siv tsis loj, feem ntau siv txoj kev vuam kho. Yog tias cov roj vuam xau, cov xau vuam yuav tsum tsis pub ntau tshaj 2 zaug, lossis yuav tsum tau hloov pauv kom kho cov yeeb nkab. Thaum vuam qhov xau, txwv tsis pub ua haujlwm hauv ib puag ncig nrog cov tub yees tuab.
3. Kev kho dua tshiab ntawm flange
1) Tshawb xyuas qhov preload ntawm cov bolts ntawm qhov kev sib txuas ntawm lub flange, yog tias lawv xoob, nruj cov txiv ntoo symmetrically nrog ib tug spanner kom ua rau lub zog sib xws, tab sis yuav tsum tsis txhob nruj dhau. Yog tias cov bolts yog deformed lossis corroded hnyav, tshiab bolts yuav tsum tau hloov.
2) Lub gasket asbestos ntawm qhov flange txuas yog corroded lossis hlawv tawm, ua rau poob ntawm lub peev xwm sealing, thiab yuav tsum tau hloov nrog lub gasket tshiab. Ua ntej hloov lub gasket tshiab, lub gasket qub yuav tsum tau khawb tawm thiab ntxuav nrog paraffin los xyuas seb lub flange sealing kab puas corroded lossis puas tsuaj. Yog tias tsis muaj teeb meem tuaj yeem hloov nrog lub gasket tshiab, diagonal sib npaug ntawm cov flange bolts tuaj yeem nruj. Yog tias qhov chaw sealing ntawm flange raug rau corrosion loj lossis sealing kab puas tsuaj, koj tuaj yeem hloov lub flange tshiab lossis kho kom zoo thiab tom qab ntawd ntsia rau ntawm lub gasket tshiab kom tiv thaiv kev siv xau.
3) Lub vuam seam tsis nruj, yuav tsum tau kho welded.
4) Yog tias qhov vuam ua rau lub flange warp thiab tsis ua raws li qhov yuav tsum tau sib dhos, nws yuav tsum tau tig thiab ua tiav lossis hloov.
5) Thaum lub sijhawm teeb tsa, yog tias ob lub flanges centre line tsis zoo ib yam, nws qhov chaw sib cuag tsis sib xws, cov yeeb nkab yuav tsum raug txiav thiab rov welded.
4. Kho lub valve
1) Hloov cov khoom ntim. Lub luag haujlwm tseem ceeb ntawm cov khoom ntim yog tiv thaiv cov khoom siv ua haujlwm raws li lub qia valve axial to thiab teeb tsa. Yog tias muaj qhov to me me, tuaj yeem ua kom lub qog ntim nruj, xws li qhov to tsis tuaj yeem tshem tawm, yuav tsum hloov cov khoom ntim. Kev hloov ntawm lub qia valve yuav tsum tau ntsia hlau tawm mus rau qhov kawg, nrog rau lub pin ntim rau ntawm cov khoom ntim qub, thiab tom qab ntawd npaj txhij ntsia hlau cov khoom ntim tshiab, thiab tom qab ntawd nruj lub qog.
2) Kho lub spool. Hauv cov haujlwm cua txias thiab tub yees, qhov twg lub valve loj, lub spool yog nyob ntawm ib txheej ntawm pasteurised alloy lossis fluorine yas foob. Sab nraub qaum ntawm lub spool kuj muaj ib txheej ntawm pasteurised alloy, yog li thaum lub valve qia raug ntsia hlau tawm mus rau qhov chaw hauv qab, nws tuaj yeem kaw cov khoom yam tsis xau tawm raws li lub valve qia.
Thaum lub valve raug rhuav tshem, ua ntej ncaj lub valve qia kom deburr, thiab tom qab ntawd hloov lub spool ntawm cov hlau pasteurized, thiab tib lub sijhawm, lub rooj zaum valve kuj yuav tsum tau sib tsoo, yog li lub spool thiab lub rooj zaum ntawm lub valve nruj nreem.
Rau cov hlau me me los yog tooj dag lub qhov valve spool, lub foob ntawm lub qhov valve no tsuas yog siv cov hlau sib cuag xwb, yog li ntawd hu ua kab foob. Vim tias nws yog kab foob, yog li ntawd lub rooj zaum valve thiab lub qhov valve yuav tsum tau sib tsoo kom zoo kom tau txais cov txiaj ntsig zoo dua.
Kev kho lub valve tiav lawm, yuav tsum ua raws li cov kev cai ntawm kev sim airtightness.
Lub tshuab tub yees hauv kev kho lub valve kev nyab xeeb kuj zoo ib yam li cov saum toj no, tab sis vim yog cov hlau pasteurized mos dua, feem ntau vim muaj kev ntxhov siab ntau dhau thiab kev ua haujlwm ntawm lub valve kev nyab xeeb tom qab ib ntus, nws nyuaj rau rov qab mus rau qhov chaw qub, yog li thaum lub siab poob rau qhov kaw siab, tseem kaw tsis nruj. Txhawm rau kov yeej qhov tsis zoo no, qee cov khoom tau hloov nrog nickel-chromium-titanium alloy (tawv) alloy, lossis nrog polytetrafluoroethylene hloov.
Lub sijhawm tshaj tawm: Lub Kaum Hli-11-2023
